Plastic shoe-bottom filler and process of making the same.



{106. COMPUSHIUNS,

a comma R PLAST'C be needed to unite the given b Paris, to soi' Cross Reference UNITED STATES PATENT onnron.

ANDREW THOKA, OF CAMIBBIDGE,'HASSACHUSETTS, ASSIGNOB TO CHEMICAL COMPANY, OF NEW YORK,

Noarrr marcau 1v. 1., a CORPORATION 01? Karma.

PLASTIC SHOE-BOT'IUK FILLER AND PROCESS OF MARIN G THE SAME.

No Drawing.

To all whom it may concern:

Be it known that 1, ANDREW Tnona, a citizen of the United States, and resident of Cambridge, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Plastic Shoe-Bottom Fillers and Processes of Making the Same, of which the following descnption is a specification.

My present invention relates to the manufacture and composition of a shoe filler of that special character which has, as set forth in my copending application Serial No. 432,083, filed May 1, 1908, (which has since become Patent No. 1,032,312, dated July 9, 1912) a stiff-setting component so as to control the sticky character of the other component. I have found that the fluxing or dissolving of the resinous gummy or tarry sticky component by means of heat or by naphtha or oil solvents, renders the solution very penetrating, so that whenever ground leather or like fibrous material is used as the filler-b0dy, the cementing fluid penetrates such material and destroys its resiliency to a large extent. This makes necessary, also, a much larger uantity of the sticky component than woul otherwise of shoefiller body-material. To obviate this, I have discovered the followingand tomake my discovery more clearly and directly 1111'- de'rstood, I will give a concrete example before explaining the invention broadly in its more comprehensive scope. If, for example, I add a considerable portion of some absorbent powder, for instance laster of oruawaxw 1 e the utter is in a fidltion i (1 heat the tailings are rea y a sor an m1 up by the powder, 1'. e. the of powder become permeated and coated so that the fluidity and hence penetration are largely neutralized, and the mass, if I have r able to the action of w cold, like a sticky soft puttyin consistency.

Specification 01' Letters Patent.

Application filed 1m 21,1912. Serial No. 705,135. OZ 3 8 ing rendere act'er of the stic Patented Dec. 22, 1914.

leather or like fibrous body-giving material or ground cork or other Well known granular s oeer substances untilthe whole mixture assumes the stifln'ess of a dough. Because of the fact that the powder is impregnated with the tailings or the tailings are loaded with the powder and the whole reduced to a paste-like condition, the immerslon and admixing of the shoe-filler body-material into this paste practically el minates the tendency of the ground leather or otherfcomminuted body-material to absorb the otherwise-penetrating sticky Ingredient. The ground leather absorbs much less of the wax tailings,-the powder s'eenung to hold to it in great part so that the leather particles are coated or enveloped, as it were, each with a film powder and the tailings (or other binding ody) 1n such a pasty condition that the penetratin ingredient cannot penetrate, but the film adheres nevertheless closely to the granules of body-material without penetrating into the shreds or particles thereof, leavmg the body-material (which is preferably fibrous, ragged leather particles) in practically its natural condition. The body-material is simply matted'together but not materially changed, so that it retains all its native strength and resiliency instead of besoggy nd dull or inert by the Preferably it is absorption of the binder.

of a portion of expedient to 11st in place Examiner the laster of Paris, other still more readily a'b'sorfint powders" or porous powders, such 2:1 i'nfiisorial earth, china clay, whitin ers' e a e'sia, lime, asbestos pulvEzed slafi, talc, soapm', the ofids or carbonates of vanoms, them- I epas rof Parisredating the stifl'ening efieet of the compound as may be desired. In fact, all the plaster of aris may be omitted and the other 0wders wholly employed, in' which case, owever, either a difi'erent stiff-setting component must be ern loyed or a different charyeomponent used which shall provide the required stiffness and pernianent of the fillerdayer. By using the pasta-or Paris or other absorbent inert owder, I am la tice to use a inuch and rntjfetitg'yiiarletyof the wax (or mi of the other sticky elements 10 o a per 1011 o rious pow n the various lists contained in my application aforesaid and the other applications and patents therein referred to). One advantage of using a more sticky and softer component for the sticky element of the compound is that it is less expensive. Without the inert powder of my present invention, such soft and sticky component could not be used because of its very low-melting and high penetrating character (especially with a porous body-material like leather). Instead of the plaster of Paris, any other suitable inert powder capable of absorbing the sticky element and at the same time acting as a stiff-setting component may be em- )loyed, such for instance as cement (either ortland, natural, or slag). Ilie use of vaers which are not inert is mentioned and claimed in my application before noted, the present application being limited, so far as this feature is concerned, to the inert powders (but not to the exclusion of the soluble powders, which may be used as stifi'ening agents along with these inert powders, within the scope of the present invention and my appended claims). The resulting filler may be used without heat, or preferably with heat atleast it is preferable to use heat in connection with the spreading of it, as for instance with a heated tool, in order to render the flowing thereof more smooth and pliable. The heated tool brings out the stickiness and waterproofing characteristics which have been latent or smothered temporarily by the powder and moisture. The filler is adhesive and cohesive, and, as the resilient or yielding character of the comminuted filler body-material has not been appreciably affected, the filler is highly efficient in the shoe bottom. The absorbent substances mentioned are all of mineral origin, and, 'generally speaking, mineral substances are to be preferred because they are cheap, indestructible, easily powdered, and non-inflammable, but other substances may be used. These substances form in effect part of the filler-body but preferably much finer than the normal granular body-material. Among the other substances, I may mention powdered hardwood mor similar dust-like waste ma ma 0 vegetable origin, or bone-dust, or dried In-fact, an diluent or subdivi er and disseminator of the adhesive agent of my composition may be used to act to some extent as the restrainer of the adhesive or as a combined coadhesive and restrainer. For lack of a different generic designation, I use in the claims theword restrainer as the neric name for all of the powders mentione The word restrainer has the same meaning as in my copending application first mentioned.

The sticky component of my composition may be any of the various gummy, tarry and powdery or absorEnt pitchy substances or other sticky substances and compositions referred to in my application identified above. Instead of the word gummy, as used in commerce, the word waxy. is equally well known in special trades to refer' to the same characteristic and materials, and accordingly I use the word waxy to include the word gummy as thus used, and it means here the sticky pitchy materials subservient to melting heat and not soluble in water. For instance, waxtailings is waxy or gumm in the same sense. For instance, the p aster of Paris itself a binder and, if properly retarded so that it will not set with undue quickness, it may be mixed directly with the shoefiller body-material, such as ground cork or ground leather, to constitute filler,-and in such case still better results can be obtained by using a retarder which is also an adhesive and a toughener (so as to modify the otherwise brittle character of the plaster), as for instance dextrin or the glues of my before mentioned ap lication permanently jellified and rendere permanently pliable as therein explained.

' For a purpose given below, I prefer sometimes to use cements havin hydraulic setting qualities, such as Port and cement or plaster of Paris, or cements having similar setting properties, such as ma esium ox chlorid cement as diluents of my adhesive. Klso these all have a restraining effect upon the sticky nature of the adhesive and are in cluded among the restrainers. In using cements of the nature just indicated, water must of course be supplied. I mix witITtH' I to a free-flowing, t orou hly liquid condition. To this I add my erbody-material,

generally ound leather, although cork or 111 may d5 used,-5Efore the cement begms to set, and stir and work enou h in to make a mass of the consistency o dough. Part of the water is used in hydratin the cement. Under the treatment indicate the cement cannot set in mass, but I believe that each tiny quantity mixed with the waxy film around each particle of filler body-material, receives its proper quantity of water, hardens, and forms a more or less stifi envelop about the same particle. Part of the wateracts as a menstruum probably and is subsequently removed by evaporation. Plaster of aris under ordinary conditions is quite quick-setting when moistened. The presence of the wax tailings retards this to some extent, and if it is desired to retard it still further I add a small proportion (say half of one per cent.) of marshmallow or Ems, or other of the well own retarders use for this purpose. Thepresence of the comma a Pusnc plaster of Paris increases the cohesiveness of the filler mass but not its adhesivene'ss,

and hence, as already mentioned, it is preferable to supply the additional adhesiveness by a sticky paste, as mentioned'in my application aforesaid, in which case one function of the plaster is to make the filler ql'iliicker-setting. While I have mentioned t e fact that the resence of the powder largely eliminates the loss of the sticky component previously due to absorption by the shoe-filler body-material, it is to be borne in mind that the powder increases the bulk or ultimate mass of the filler, and of course there must be used enough of the sticky component to convert the entire mass into proper condition of cohesion, pliability, permanency, etc., to constitute a shoe-filler. This water treatment of the saturated laster makes it possible to cut down to a arge extent the uantity of the sticky component used for t e total bulk of filler, because much less of it is held absorbed by the cement, the water replacing or driving it out to a large extent. The filler-bod portion of the compound being more or ess porous, also takes up the water in preference to the slower moving tailings, and the water thus absorbed prevents the entry of the tailings into the particles of the filler-body. The water bars it out. I include ground cork among the water-absorbent materials, as I do'not intend by the latter term to require the absorption of water to any great extent but only enough to repel the tai ings (or other penetrative adhesive).

I may compound the filler indicated above without adding water until all the other ingredients have been mixed. The material so compounded without water may be shipped in suitable packages or contalners,

and the shoe manufacturer may himself add the water and stir it in. I may also ship' in suitable packages or containersthe composition without either water or fibrous or other shoe-filler body-material, leaving the userto add both water and body material, 1'. e. the leather scrap, ground, of his shop, or any other shoe-filler-body-inaterial he pleases. In case I should use magnesium cement (which is not the preferred form), which i's formed by bringing together magnesium oxid and ma esium chlorid I ma material, a. e. e s 10 y component, and the earthy absorbent with or without thefibrous' filler-body, with magnesium oxid and ship it so, letting the user add the necessary chlorid diluted with a proper amount of water and or reside in the least upon pr portions;

t'ross Helerence Having described my invention, what I claim as new and desire to secure by Letters Patent is:

'1. The filler, whic consists in mixing with a sticky water-repellent binder, a .finely divided material capable of taking u the sticky binder so as to. subdivide the bin er and hold it in a se arated condition amenable to the action o water, and then intermixing shoe-filler body-material to a dough-like consistency, substantially as and for the purpose described.

2. The process of making filler, which consists in mixing with owdered cementitious material, wax tai in s, adding water in excess of the quantity su cient to set the cement and to make the mass txaminer rocess of making shoe-bottom shoe bottom fluid, and mixing with the fluid thus 'presubstantially as and for the purpose described.

3. The process of makin shoe-bottom filler, which consists in mixing with powdered cementitious material, wax tailinfiis, adding water in excess of the quantity su cient to set the cement and to make the mass fluid, introducing means for retarding the cement, and mixing with the fluid thus prepared, before the cement begins to set, a quantity of water-absorbent body-material, substantially as and for the purpose described.

4. The process of making shoe-bottom filler, which consists in mixing with powdered plaster of Paris, a waxy heat-sensitive sticky binder, addin water in quantity, so as-to make the resu t thinly fluid, mixing thoroughly, and adding at once to the mass thus prepared, a quantity of water-absorbent filler body-material until the mass attains a dough-like consistency, substantially as and for the purpose described.

5. The process of making shoe-bottom filler, which consists in mixing with -powdered plaster of Paris, a sticky penetrative binder, adding water in quantity, so as to make the result thinly fluid, mixing thoroughly, and adding at once to the mass thus prepared, a quantity of water-absorbent filler body-material until the mass attains a dough-like consistency, substantially as and for the purpose described.

6. The method of making shoe-bottom filler, which consists in mixing powdered cementitious material and a permanently sticky waxy materiahwith water in excess of the quantity necessary to set the cementitious material, and mixing immediately with this a quantity 'of elastic water-absorbent body-material, substantially as and for the purpose described. I

7. The process of making shoe-filler,

I which consists in mixing with a powdered A soft putty-like r 13. The recess of making a shoe-bottom- 5 tion, and adding c quantitysuflicient to sistency of dough, an mixm material'having the qualit of hydraulicity, a. heat-sensitive sticky bin er, adding water, and stirrin then adding a quantity of watei-absor ent elastic body-material, and stirring well before the cementv begins to set, substantially as and for the purpose described. a

8. The process of making shoe-filler, which consists in mixing with a owdered material, a part, at least, of whic has the quality of hydraulicity, sticky binder, adding water, and stirring, then adding a quantity of water-absorbent elastic body-material, and stirring well before the cementbegins to set, substantially as and for the purpose described.

9. The recess of making shoe-filler, which consists in mixing with cementitious material, waterproof material of a sticky waxy nature and water and a uantity of granular elastic water-absorbent ody-material, substantially as and for the purpose described.

'10.'The process of making shoe-filler, which consists in adding to a dry, watersetting, cement-makin powder, wax tailings in a quantity su cient to make when mixed a mass of a soft putt -like consistency, mixing, saturating wit water to a thin, free-flowin conditlon, and adding at once ground cor in quantity sufficient to make a mass of the consistency of dough, and mixing, substantially as and for the purpose described.

11. The process of making shoe-filler,

which consists in adding to a dry powder of absorbing material containing at least in part a dry water-setting, cementitious material, wax tailings in a quantity suflicient to make when mixed a mass of a soft puttylike consistency, mixing, saturating with water to a thin, free-flowing condition, and adding at once granular body-material in quantity sufficient to make a mass of the consistency of dough, and mixing, substantially as and for the purpose described.

12. The process of making shoe-filler, which consists in adding to a dry powder of absorbing material containing ry cementi- .tious material, wax tailings a quantity sufficient to make when mixed a mass of a consistency, mixing, saturatto a thin, free-flowing condiat once comminuted bodyround leather, in a e mass of the consubstantially as and for the purpose descri d.

ing with water material containing filler, whic consists in mixing with waxy sticky adhesive material, a powdery absorptive material, and water to a thin pasty fluid, and then mi in a quantity of elastic, granular, shoeer body-material sufficient to make a dough-like mass and until a heat sensitive each granule is thinly coated with said mixture and the mass is sluggishly plastic as required for a shoe'filler, substantially as and for the purpose described.

14. The process of making a shoe-bottom filler, which consists in adding to a waterrepellent stick binder, an inert powdery material capable of holding the sticky binder in subdivided suspension so as to allow water to make the mixture fluid, mixing thorou hly with water to a thin pasty fluid, and t en mixing in a quantity of comminuted shoe-filler body-material sufiicient to make a dough-like mass and until each particle of said body-material is thinly enveloped with said mixture and the mass is sluggishly plastic as required for a shoefiller, substantially as and for the purpose described.

15. The process of making a material for use in filling the bottoms of shoes, which consists in making wax-tailings less penetrative to the body-material by first adding1 a mineral powder, and then adding to t is mixture comminuted shoe-filler body-material in uantity sufiicient to give the mass a doughike consistency, substantially as and for the purpose described.

16. A shoe-bottom filler, comprising hydratable plaster of Paris, retarding means to retard the setting of the plaster of Paris, and comminuted shoe-filler body-material united to a condition permanently'doughlike or plastic when cold, substantially as and for the purpose described.

17. A shoe-bottom filler, comprising hydratable powdered materialas described, retarding means to retard the setting of said material, and comminuted shoe-filler bodymaterial united to a condition ermanent y dough-like or plastic when co (1, substantially as and for the purpose described.

18. A shoe-bottom filler, which comprises a permanently sticky, heat-sensitive adhe sivematerial, a powdered, inert cementitious material holding said adhesive material in a subdivided suspension, and a fibrous shoefiller body-material united to a condition permanently dough-like or plastic when cold, substantially as and for the purpose described.

19. A shoe-bottom filler, which comprises a suitable permanently sticky binder, a cement such as described having hydraulic pggperties, and a comminuted shoe-fillery material, substantially as and for the ose described.

20. A shoe-bottom filler, having a rmanently pliable consistency, dough- 'ke or plastic when cold so as to be'moldable into a thin layer in the shoe-bottom, non-responsive to low heat under ordinary conditions of wear, and non-shiftable. when set in, the shoe-bottom, said filler containing a cementitious component for binding the mass, held 31 106. COMPOSITIONS,

in subdivided suspension throughout the mass by an inert powder and the whole reonsive to water to render the mass lastic or application to the shoe-bottom, su tantially as and for the purpose described.

21. A shoe-bottom filler, having a permanently pliable consistency, dough -like or plastic when cold so as to be mol able into a thin layer in the shoe-bottom, non-responsive to low heat under ordinary conditions of wear, and non-shiftablewhen set in the shoe-bottom, said filler containing a normally low-heat responsive sticky binder normally water-repellent, held in a subdivided suspension by an inertdisseminating powder rendering the mixture capable 0 being made fluid by water, substantially as and for the purpose described.

22. A shoe-bottom filler, havin a rmanentl pliable consistency, dou like or plastic when cold so as to be mo dable into a thin layer in the shoe-bottom, non-responsive to low heat under ordinary conditions of wear, and non-shiftable when set in the shoe-bottom, said filler containing a normally low-heat responsive sticky binder normally water-repellent, held in a subdivided suspension by an inert absorbent disseminating owder renderin the mixture capable of ein made fluid y water, substantially as and for the purpose described.

23. A shoe-bottom filler, having a permanentl pliable consistency, dou h-like .or plastic when cold so as to be mo dable into a thin layer in the shoe-bottom, non-responsive to low heat under ordinary conditions of wear, and non-shiftable when set in the shoe-bottom, said filler containing a normally low-heat responsive sticky binder normally water-repellent, held in a subdivided.

suspension by an inert absorbent and stiifening disseminatin powder rendering the mixture capable of ing made fluid by water, substantially as and for the purpose described.

24. A shoe-bottom filler comprising a comminuted resilient shoe-filler body-material, intermixed to a plastic, ,sluggishly moldable consistency with a permanently sticky binder held in a finely subdivided condition b an inert ggwdered absorbent mineral, an capable of ing rendered fluid by the addition of water, substantially as and for the purpose described.

25. A shoe-bottom filler, consist of a moldable mass coherent, pliable an nonshifting when set, having a doughy consistency before setting, and containing a sticky Cross Reference binder rendered fluid by low heat, and an inert powdered absorbent material ada ted to control the fluidity of the binder y its absorptive influence on the binder, substantially as and for the purpose described.

26. A shoe-filler for fillin the bottoms of shoes, consistin of a mo dable, coherent mass pliable an non-shifting when set, having a doughy consistency before setting, and com rising in its composition a comminuted fibrous shoe-filler bod -material, a sticky binder rendered fluid y low heat, and an inert powdered absorbent material adapted to control the fluidity of the binder by its absorptive influence on the binder, substantially as and for the purpose de- 27. A shoe-filler for fillin the bottoms of shoes, consistin of a mo dable, coherent mass pliable an non-shiftin when set, having a doughy consistency be ore setting, and comprising in its composition a comminuted fibrous shoe-filler bod -material, a sticky binder rendered fluid by low heat, and an inert absorbent powder holding said binder in suspension and adapted to disseminate the binder in minute subdivision throughout the comminuted body-material by the aid of water, substantially as and for the purpose described.

28. A shoe-bottom filler, which comprises wax tailings, powdered plaster of Paris, and comminuted filler-body material, substantially asand for the purpose described.

29. In a shoe-filling compound, wax tailings diluted with dry laster of Paris, substantially as and for t e urpose described.

30. In a shoe-bottom er, a penetrative sticky coin onent, a water-absorbent component, an water suificient to influence said water-absorbent component against becoming penetrated by said sticky component, said filler ha a moldable plasticity, substantially as a h d for the urpose described. 31. In a shoe-bottom filler, a penetrative sticky component, a comminuted filler bodymaterial, and a water-charged powdered component aiding in preventing said sticky component from netrating said filler material, substantially as and for the purpose described.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

ANDREW THOMA.

Witnesses:

Jams R. HODDEB, EDWARD MAXWELL.

Examine: 

